package demo;

class Animal {
    public String name;
    public int age;

    public Animal(String name,int age) {
        this.name = name;
        this.age = age;
    }
    public void eat() {
        System.out.println(this.name + " 正在吃饭！");
    }
}

class Dog extends Animal {
    public Dog(String name,int age) {
        super(name,age);
    }

    public void bark() {
        System.out.println(this.name + " 正在汪汪叫！");
    }
}

public class Test {
    public static void main(String[] args) {
        Dog dog = new Dog("erha",12);
        dog.eat();
        dog.bark();
    }
}



